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From "Anastasia Braginsky (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19133) Transfer big cells or upserted/appended cells into MSLAB upon flattening to CellChunkMap
Date Thu, 07 Dec 2017 13:13:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16281827#comment-16281827
] 

Anastasia Braginsky commented on HBASE-19133:
---------------------------------------------

Hi All,

First of all I want to introduce you Gali Sheffi ([~galish])! Gali joined us working on HBase
and will help us with some patches, which is very exciting! Gali is currently working under
my supervision, but we all are going to review. Gali has prepared the patch for this JIRA,
she is still learning the HBase internals. Welcome Gali!

Thanks,
Anastasia

> Transfer big cells or upserted/appended cells into MSLAB upon flattening to CellChunkMap
> ----------------------------------------------------------------------------------------
>
>                 Key: HBASE-19133
>                 URL: https://issues.apache.org/jira/browse/HBASE-19133
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>
> CellChunkMap Segment index requires all cell data to be written in the MSLAB Chunks.
Eventhough MSLAB is enabled, cells bigger than chunk size or upserted/incremented/appended
cells are still allocated on the JVM stack. If such cells are found in the process of flattening
into CellChunkMap (in-memory-flush) they need to be copied into MSLAB.



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